Justin Chambers Barry Allen / The Flash (voice) C. Thomas Howell Professor Eobard 'Zoom' Thawne / Reverse-Flash (voice) Michael B. Jordan Victor Stone / Cyborg (voice) Kevin McKidd Thomas Wayne / Flashpoint Batman (voice) Kevin Conroy Bruce Wayne / Batman (voice) Dee Bradley Baker Etrigan the Demon / Top / Canterbury Cricket (voice) Steve Blum Lex Luthor / Captain Thunder (voice) Sam Daly Clark Kent / Kal-El / Superman (voice) Dana Delany Lois Lane (voice) Grey DeLisle Nora Allen / Young Barry Allen / Martha Wayne / Joker (voice) Cary Elwes Orin / Arthur Curry / Aquaman (voice) Michael Beach Black Manta (voice) Nathan Fillion Hal Jordan / Green Lantern (voice) Jennifer Hale Iris West / Billy Batson (voice) Danny Huston General Sam Lane (voice) Danny Jacobs Grifter / Captain Cold (voice) Peter Jessop Dr. Vulko (voice) Vanessa Marshall Wonder Woman (voice) Candi Milo Persephone / Pedro Pena (voice) Ron Perlman Slade Wilson / Deathstroke (voice) Kevin Michael Richardson President of the United States (voice) Andrea Romano Doris / Central City Newsreader (voice) James Patrick Stuart Steve Trevor / George "Digger" Harkness / Captain Boomerang / Orm Marius / Ocean Master (voice) Hynden Walch Yo-Yo (voice)